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arXiv 1901.09153math.AP
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粘性慢MHD激波的横向分叉

Transverse bifurcation of viscous slow MHD shocks

Blake Barker, Rafael Monteiro, Kevin Zumbrun

摘要:

本文采用解析和数值相结合的Evans函数方法研究了具有周期边界条件的通道中平面慢Lax MHD激波的多维粘性和无粘性稳定性以及相应的横向分叉。值得注意的是,这包括粘性MHD的第一个多维数值埃文斯函数研究。我们的研究结果表明,而不是一个平面的冲击,具有相同的正常速度的非平面行波是典型的传播模式在慢拉克斯模式。此外,粘性和无粘稳定性转变似乎同意,回答(对于这个特定的模型和设置)Zumbrun和塞尔的一个悬而未决的问题。

英文摘要:

We study by a combination of analytical and numerical Evans function techniques multi-D viscous and inviscid stability and associated transverse bifurcation of planar slow Lax MHD shocks in a channel with periodic boundary conditions. Notably, this includes the first multi-D numerical Evans function study for viscous MHD. Our results suggest that, rather than a planar shock, a nonplanar traveling wave with the same normal velocity is the typical mode of propagation in the slow Lax mode. Moreover, viscous and inviscid stability transitions appear to agree, answering (for this particular model and setting) an open question of Zumbrun and Serre.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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